Geek Vape Loop V1.5 RDA is the updated version of the Loop RDA, it features an innovative "W" shape build deck that allows building single coil or dual coils, it adopts surround airflow system, the airflow enters through the bottom and transfers from side to the bottom. With a top-filling system, it is very easy and convenient to direct dripping from the mouthpiece without leakage. Moreover, a gold-plated bottom feed pin is included in the package, which means you can convert your RDA into a bottom-feeding rebuildable atomizer and use it on a squonk kit. 6 colors are available.